I am using NERO 7 and am trying to burn some HD (720p) previews i downloaded. whenever i burn them to dvd the picture is great but the sound is not there. i tried with some low res ones and they worked. i have tried downloading various codecs, etc but to no avail. The files are Quicktime .mov files.

Any ideas or help would be appreciated.

Thanks

P.S. the PC has 1.5gb ram 200gb SATA hard disk, etc so i dont think it is the pc.